Dna Of Forensic Science And Dna Essay

1079 Words Jan 13th, 2015 null Page
DNA in Forensic Science
Every organism contains cells within which an organic polymer called Deoxyribonucleic acid (DNA) is found. This particular polymer is composed of the phosphate backbone part, deoxyribose sugar part and also the nitrogenous base part. According to Butler, (2010), the phosphate backbone and deoxyribose sugar components are constant in all persons and, therefore, biologists today utilize the nitrogenous base component since it helps in distinguishing different individuals. Indeed, this base is responsible for nucleotides that contain; cytonise, adenine, guanine or even thymine whose combination determines the exact coding capacity and function of the DNA as applied in forensic science. Today, DNA in forensic science is largely used to discriminate between persons, especially in proving if any blood relations exist among them. This is possible especially as techniques for analyzing and manipulating DNA get more durable and efficient by the day. It can include use of even the degradable samples like old hair in mitochondrial DNA since it is a hyper variable region, which has 5 to 10 times more mutilation rate than the nuclear DNA. It is also used to identify criminals. In this, professionals use DNA statistical results to narrow the probability that a certain person was at a crime scene. Further, it helps in building a national database of the violent crime offenders, which eventually aid in linking unsolved offenses with the profiled criminals. This…

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